Starting multiple Shairport-Sync Instances on PcP 5.0

Hi Folks,

I would like to start multiple shairport-snyc Instances on my PcP 5.0.

I have a 7.1 USB Audiocard which I split into 4 Stereo Channels.

So I now generated 4 PcP Instances via:

and so on.

Now I want to do this also with Shairport-Sync, so that I can Stream to each room separately.

Can anyone give me a hint how I can reach my target?

I searched but couldn´t find a solution.

Thanks in Advance.